- Accelerate KEYs and destroy a LINE as soon as possible.

- Aim at a bonus on the stage where two or more LINEs appear.

- Destruction of a LINE will stop descent of LINEs for a moment. This is used when the input of KEYs does not fulfill demand. (Time can be gained, if a bonus is given up and the LINE is destroyed each one)

- Destroy the blink LINE with other LINEs, since it will descend at high speed if becoming it the bottom.